package Thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class Demo19 {
    public static void main(String[] args) throws InterruptedException {
       ExecutorService service = Executors.newFixedThreadPool(4);
        for (int i = 0; i < 100; i++) {
            int id = i;
            service.submit(() -> {
                Thread current = Thread.currentThread();
                System.out.println("hello thread " + id + ", " + current.getName());
            });
        }

        Thread.sleep(2000);


        service.shutdown();
        System.out.println("程序退出");
    }
}
